c) For water pipelines 30-inch and larger in diameter, provide a minimum of twenty (20) feet. separation OD to OD of the two pipelines. d) Horizontal separation between the existing and proposed water pipelines may have to be. increased when the pipeline is within the zone of influence of existing concrete blocking.
Cultural diffusion is a change process where the values and  cultural constructs of one group are passed to another group.  Cultural leveling refers to the process by which â¦ cultures lose  their identity and become similar to one another.
William Ogburn coined the term cultural lag to referto how a groupâs nonmaterial culture lags behind itschanging technology. With todayâs technological ad-vances in travel and communication, cultural diffusion is occurring rapidly. This leads to cultural leveling, whereby many groups are adopting Western culture inplace of their own customs. Much of the richness of theworldâs diverse cultures is being lost in the process. Pp. 54â55.